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Q.

The period in which s-block, p-block and d-block elements are present

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a

period 1

b

period 6

c

period 2

d

period 3

answer is B.

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Detailed Solution

  • 4th period contains 3d series which has scandium, titanium, chromium like metals and potassium and calcium from alkali and alkaline earth metals(s-block) respectively.
  • Gallium, germanium and selenium etc are elements of the p block of period four.
  • Hence 4th period consists of s-block, p-block and d-block elements.
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